Ferrari is only four points behind the Brackley-based team, having gained a further 16 in Las Vegas, helped by Charles Leclerc’s last-lap pass for second on Sergio Perez.
Carlos Sainz backed his team-mate up with sixth, the Spaniard having overcome a grid penalty and a first-lap spin to add eight points to the team's rally.
Given the high stakes in terms of both prestige and the share of the prize fund, the battle for second in the constructors’ table will add an extra dimension to the Abu Dhabi season finale.
“If you consider that we were 60 points behind them couple of races ago, we are on a good path,” said Vasseur. “But Abu Dhabi will be another story, four points it's nothing or a lot.
“And again we were able to perform in Monza, in Singapore, in Mexico during this weekend on different tracks with different weather conditions, different compounds, and we can be more than motivated before Abu Dhabi. The momentum is for us, and let's see what happens."
Vasseur admitted that there were mixed emotions in the camp after Leclerc had led the Las Vegas race, with the safety care just after his pitstop having done him no favours.
“For sure on our side it's a strange feeling,” he said when asked by Autosport to sum up the team’s Vegas race. “You do the pole position, you overtake three times Red Bull in the race, and you do P2. It's not usual!
Source: Autosport